Pressurizing pump structure

ABSTRACT

A pressurizing pump structure includes a cover, a flow guide, a pump and a main axle. The flow guide is interposed between the cover and the pump. The main axle is mounted inside the pump. The pump has several pressurizing chambers, each of which has one or more pressurizing tanks. Each of the pressurizing tanks has a piston. The main axle has an eccentric part going into the pump for driving the pistons in the pressurizing tanks to make reciprocal motions as the main axle rotates, thereby outputting fluid with a higher pressure.

BACKGROUND OF THE INVENTION

1. Field of Invention

The invention relates to a pump structure and, in particular, to a pressurizing pump structure that has a better structural strength and satisfies the high-pressure output demand.

2. Related Art

A conventional pressurizing pump structure is shown in FIG. 9. It mainly consists of a driving part 91 and a pump cover 92. The top of the driving part 91 is protruded with several equally spaced driving rods 93. The top of each of the driving rods 93 is locked with a top chip 94. The bottom of the driving part 91 is provided with a bearing 95 connected with a driving head 96. The bottom of the driving head 96 is further connected with the output axle of a motor 97. The driving head 96 and the output axle of the motor 97 are disposed eccentrically. When the motor 97 rotates the driving head 96, the driving head 96 sequentially drives the top chips 94 on the driving rods 93 to perform a reciprocal motion by moving up and downs, thereby pressuring water in the pump cover 92.

In practice, the spacer 98 between each driving rod 93 and the top chip 94 is likely to be damaged due to the pulling of the driving rod 93 and the top chip 94. This results in leakage and worse pressuring effects. Moreover, the pressuring efficiency provided by the pressurizing pump is not high enough for high-pressure output.

SUMMARY OF THE INVENTION

An objective of the invention is to provide a pressurizing pump structure with a better structural strength against damages and to achieve high-pressure output requirements.

To achieve the above-mentioned objective, the disclosed structure includes a cover, a flow guide, a pump, and a main axle.

The cover has an inlet and an outlet. The flow guide is interposed between the cover and the pump. The flow guide has a first passage connected to the inlet and a second passage connected to the outlet.

The pump has several pressurizing chambers, each of which has an incoming compartment, an outgoing compartment, and a plurality of pressurizing tanks. Each of the pressurizing tanks has a piston. The incoming compartment and the outgoing compartment are in fluid communications with the pressurizing tank. The incoming compartment is further connected with the first passage, and the outgoing compartment to the second passage. A first check valve is provided between the incoming compartment and the first passage for the fluid to flow in one way. A second check valve is provided between the outgoing compartment and the second passage for the fluid to flow in one way.

The main axle goes through the inside of the pump. An eccentric part is formed off the center of the main axle. The eccentric part is mounted with a bearing, which is further mounted with a transmission element. The transmission element is pivotally connected with several connecting shafts, each of which is pivotally connected to the piston in the corresponding pressurizing chamber. As the main axle rotates, the transmission elements are driven to swing eccentrically. Such a motion further drives the connecting shafts pivotally installed on the transmission elements to make the pistons inside the pressurizing tanks to perform a reciprocal motion, thereby increasing the pressure of the output fluid.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other features, aspects and advantages of the invention will become apparent by reference to the following description and accompanying drawings which are given by way of illustration only, and thus are not limitative of the invention, and wherein:

FIG. 1 is an exploded view of the invention;

FIG. 2 is a schematic view of the disclosed flow guide;

FIG. 3 is a perspective of the invention;

FIG. 4 is a cross-sectional view of the invention;

FIG. 5 shows the invention in use, illustrating the flow as the fluid enters the incoming compartment;

FIG. 6 shows the invention in use, illustrating the state when the piston performs a reciprocal motion and the fluid enters the pressurizing tank;

FIG. 7 shows the invention in use, illustrating the state when the piston performs a reciprocal motion to push the fluid in the pressurizing tank to enter the outgoing compartment;

FIG. 8 shows the invention in use, illustrating the flow as the pressurized fluid goes from the outgoing compartment to outside; and

FIG. 9 is a structural view of a conventional pressurizing pump.

DETAILED DESCRIPTION OF THE INVENTION

The present invention will be apparent from the following detailed description, which proceeds with reference to the accompanying drawings, wherein the same references relate to the same elements.

Please refer to FIGS. 1 to 4. The disclosed structure of a pressurizing pump consists mainly of a cover 11, a flow guide 21, a pump 31, and a main axle 41.

The cover 11 has an inlet 12 and an outlet 13. The flow guide 21 is interposed between the cover 11 and the pump 31.

The flow guide 21 has a disk shape. The side of the glow guide 21 facing the pump 31 is annually formed with a first passage 22. The flow guide 21 is formed with a first connecting hole 23 via which the first passage 22 is connected with the inlet 12. The side of the flow guide 21 facing the cover 11 is annually formed with a second passage 24 connected with the outlet 13. The second passage 24 is formed with a second connecting hole 25 that at least goes through the flow guide 21.

The pump 31 is a hollow shell whose inside has a transmission space 32. The pump 31 has several pressurizing chambers 33, each of which has an incoming compartment 34, an outgoing compartment 35 and several pressurizing tanks 36. Each of the pressurizing tanks 36 has a piston 37 to perform a reciprocal motion along the inner wall of the pressurizing tank 36. The inner wall of the pressurizing tank 36 is provided with at least one check ring 361 with a V-shaped cross section. Each of the check rings 361 urges against the surrounding of the piston 37.

The incoming compartment 34 is in fluid communications with the pressurizing tanks 36 via an incoming passage 341. The outgoing compartment 35 is in fluid communications with the pressurizing tanks 36 via an outgoing passage 351. The incoming compartment 34 is further in fluid communications with the first passage 22 of the flow guide 21, and the outgoing compartment 35 to the second connecting hole 25 of the flow guide 21. A first check valve 38 is interposed between the incoming compartment 34 and the first passage 22 for the fluid to flow in one way into the incoming compartment 34. A second check valve 39 is interposed between the outgoing compartment 35 and the second connecting hole 25 for the fluid to flow in one way into the second connecting hole 25. In this embodiment, the inside of the pump 31 is formed three equally spaced pressurizing chambers 33. Each of the pressurizing chambers 33 has two pressurizing tanks 36 in fluid communications with the corresponding incoming compartments 34 and outgoing compartments 35.

The main axle 41 axially goes through the transmission space 32 inside the pump 31. One end of the main axle 41 extends out of the pump 31 for the connection of a driving device 51 to rotate the main axle 41. The end of the main axle 41 inside the transmission space 32 is formed with an eccentric part 42 off the center thereof. The eccentric part 42 is mounted with at least one bearing 43, which is then mounted with a transmission element 44 in the shape of a hollow tube. The bearing 43 has an inner ring 431 and an outer ring 432. The inner ring 431 of the bearing 43 is in touch with the surrounding of the eccentric part 42 of the main axle 41. The outer ring 432 of the bearing 43 is in touch with the inner rim of the transmission element 44. The transmission element has pivotal connecting parts 441 opposite to the pressurizing tanks 36 of each of the pressurizing chambers 33. Each of the pivotal connecting parts 441 is pivotally connected with a connecting shaft 45. The other end of each of the connecting shafts 45 is pivotally connected to the bottom of the piston 37 in the corresponding pressurizing tank 36. When the main axle 41 rotates, the eccentric part 42 and the bearing 43 drive the transmission element 44 to swing eccentrically. The connecting shafts 45 pivotally connected with the transmission element 44 are driven to make the corresponding pistons 37 to perform a reciprocal motion along the corresponding pressurizing tanks 36. As the pistons 37 perform the reciprocal motion, the space volume in the pressurizing tanks 36 varies, directly pushing the fluid therein to increase its pressure.

To further explain the characters, technical details and effects of the invention, the usage of the invention is further described below.

As shown in FIG. 5, when the fluid enters the pump cover 11 via the inlet 12, it flows into the first passage 22 via the first connecting hole 23 of the flow guide 21. The fluid is then distributed into the incoming compartments 34 of the pressurizing chambers 33.

When the driving device 51 rotates the main axle 41, as shown in FIGS. 6 and 7, the eccentric part 42 of the main axle 41 and the bearing 43 also drive the transmission element 44 to swing eccentrically. The connecting shafts 45 pivotally installed on the transmission element 44 then drive the pistons 37 of the corresponding pressurizing tanks 36 to perform a reciprocal motion. Hence, the fluid in the pressurizing tanks 36 is pushed to increase the pressure thereof. A first check valve 38 is interposed between the incoming compartment 34 and the first passage 22 to ensure the one-way flow of the fluid. The pressurized fluid can only enter the second passage 24 of the flow guide 21 via the second check valve 39 of the outgoing compartment 35. As shown in FIG. 8, the fluid pressurized by the pistons 37 of the pressurizing tanks 36 enters the second connecting holes 25 of the flow guide 21 via the outgoing chamber 35. The fluid is then guided by the second connecting holes 25 into the second passage 24. Finally, the pressurized fluid is expelled output via the outlet 13 of the cover 11.

According to the above description, the reciprocal motion of the piston 37 in each of the pressurizing tanks 36 can increase the pressure of the output fluid. Therefore, the invention has a better structural strength against damages. Moreover, the pressurizing method using the pistons 37 can readily meet the high-pressure output demand. The invention can increase the number of pressurizing tanks 36 in each of the pressurizing chambers 33 to promote the pressurizing efficiency thereof.

Although the invention has been described with reference to specific embodiments, this description is not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternative embodiments, will be apparent to people skilled in the art. Therefore, it is contemplated that the appended claims will cover all modifications that fall within the true scope of the invention. 

What is claimed is:
 1. A pressurizing pump structure comprising a cover, a flow guide, a pump and a main axle, characterized in that: the cover has an inlet and an outlet, with the flow guide interposed between the cover and the pump; the flow guide has a first passage in fluid communications with the inlet and a second passage in fluid communications with the outlet; the pump has a plurality of pressurizing chambers, each of which has an incoming compartment, an outgoing compartment, and at least one pressurizing tank; wherein the pressurizing tank has a piston, the incoming compartment and the outgoing compartment are in fluid communications with the pressurizing tank, the incoming compartment is in fluid communications with the first passage and the outgoing compartment to the second passage, a first check valve is interposed between the incoming compartment and the first passage for the fluid to flow in one way into the incoming compartment, and a second check valve is interposed between the outgoing compartment and the second passage for the fluid to flow in one way into the second passage; and the main axle goes through the inside of the pump and is formed with an eccentric part off the center thereof; wherein the eccentric part is mounted with a bearing that is further mounted with a transmission element, the transmission element is pivotally provided with a plurality of connecting shafts, the other end of each of the connecting shafts is pivotally connected with the piston of the corresponding pressurizing chamber, the rotation of the main axle drives the transmission element to swing eccentrically, and the connecting shafts pivotally connected to the transmission element drive the pistons to perform a reciprocal motion inside the corresponding pressurizing tanks, thereby increasing the pressure of the output fluid.
 2. The pressurizing pump structure of claim 1, wherein the first passage is located on the side of the flow guide facing the pump, the flow guide is formed with a first connecting hole via which the first passage is connected to the inlet, the second passage is located on the side of the flow guide facing the cover, the second passage is formed with at least one second connecting hole going through the flow guide for the second passage to connect to the outgoing compartment.
 3. The pressurizing pump structure of claim 1, wherein the inner wall of each of the pressurizing tanks is provided with at least one check ring with a V-shaped cross section, and the check ring urges against the surrounding of the corresponding piston.
 4. The pressurizing pump structure of claim 1, wherein the inside of the pump is formed with three equally spaced pressurizing chambers, each of the pressurizing chambers has two pressurizing tanks, and each of the pressurizing tanks is in fluid communications with the corresponding incoming compartment and outgoing compartment.
 5. The pressurizing pump structure of claim 1, wherein one end of the main axle extends to the outside of the pump for the connection of a driving device to rotate the main axle.
 6. The pressurizing pump structure of claim 1, wherein the bearing has an inner ring and an outer ring, the inner ring of the bearing is in touch with the surrounding of the eccentric part of the main axle, and the outer ring of the bearing is in touch with the inner rim of the transmission element.
 7. The pressurizing pump structure of claim 1, wherein the transmission element has a pivotal connecting part opposite to each of the pressurizing tanks of each of the pressurizing chambers, one end of each of the connecting shafts is pivotally connected to the pivotal connecting part, the other end of each of the connecting shafts is pivotally connected to the piston of the corresponding pressurizing tank. 